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Merge branch 'dirreq-timing'

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This commit is contained in:
Nick Mathewson 2009-07-16 15:26:07 -04:00
commit 022d251cb7
10 changed files with 435 additions and 42 deletions
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13
ChangeLog
View File

@ -15,11 +15,14 @@ Changes in version 0.2.2.1-alpha - 2009-??-??
- The memarea code now uses a sentinel value at the end of each area
to make sure nothing writes beyond the end of an area. This might
help debug some conceivable causes of bug 930.
- Directories that are configured with the --enable-geoip-stats flag
now write their GeoIP stats to disk exactly every 24 hours.
Estimated shares of v2 and v3 requests are determined as averages,
not at the end of a measurement period. Also, unresolved requests
are listed with country code '??'.
- Directories that are configured with the --enable-dirreq-stats flag
and have "DirReqStatistics 1" set write directory request stats to
disk every 24 hours. As compared to the --enable-geoip-stats flag
in 0.2.1.x, there are a few improvements: 1) stats are written to
disk exactly every 24 hours; 2) estimated shares of v2 and v3
requests are determined as mean values, not at the end of a
measurement period; 3) unresolved requests are listed with country
code '??'; 4) directories also measure download times.
- Exit nodes can write statistics on the number of exit streams and
transferred bytes per port to disk every 24 hours. To enable this,
run configure with the --enable-exit-stats option, and set

8
configure.in
View File

@ -92,11 +92,11 @@ if test "$enable_exit_stats" = "yes"; then
AC_DEFINE(ENABLE_EXIT_STATS, 1, [Defined if we try to collect per-port statistics on exits])
fi
AC_ARG_ENABLE(geoip-stats,
AS_HELP_STRING(--enable-geoip-stats, enable code for directories to collect per-country statistics))
AC_ARG_ENABLE(dirreq-stats,
AS_HELP_STRING(--enable-dirreq-stats, enable code for directories to collect per-country statistics))
if test "$enable_geoip_stats" = "yes"; then
AC_DEFINE(ENABLE_GEOIP_STATS, 1, [Defined if we try to collect per-country statistics])
if test "$enable_dirreq_stats" = "yes"; then
AC_DEFINE(ENABLE_DIRREQ_STATS, 1, [Defined if we try to collect per-country statistics])
fi
AC_ARG_ENABLE(buffer-stats,

34
src/or/config.c
View File

@ -187,12 +187,13 @@ static config_var_t _option_vars[] = {
V(DirPort, UINT, "0"),
V(DirPortFrontPage, FILENAME, NULL),
OBSOLETE("DirPostPeriod"),
#ifdef ENABLE_GEOIP_STATS
#ifdef ENABLE_DIRREQ_STATS
OBSOLETE("DirRecordUsageByCountry"),
OBSOLETE("DirRecordUsageGranularity"),
OBSOLETE("DirRecordUsageRetainIPs"),
OBSOLETE("DirRecordUsageSaveInterval"),
#endif
V(DirReqStatistics, BOOL, "0"),
VAR("DirServer", LINELIST, DirServers, NULL),
V(DNSPort, UINT, "0"),
V(DNSListenAddress, LINELIST, NULL),
@ -1376,17 +1377,25 @@ options_act(or_options_t *old_options)
geoip_load_file(actual_fname, options);
tor_free(actual_fname);
}
#ifdef ENABLE_GEOIP_STATS
/* Check if GeoIP database could be loaded. */
if (!geoip_is_loaded()) {
log_warn(LD_CONFIG, "Configured to measure GeoIP statistics, but no "
"GeoIP database found!");
return -1;
#ifdef ENABLE_DIRREQ_STATS
if (options->DirReqStatistics) {
/* Check if GeoIP database could be loaded. */
if (!geoip_is_loaded()) {
log_warn(LD_CONFIG, "Configured to measure directory request "
"statistics, but no GeoIP database found!");
return -1;
}
log_notice(LD_CONFIG, "Configured to count directory requests by "
"country and write aggregate statistics to disk. Check the "
"dirreq-stats file in your data directory that will first "
"be written in 24 hours from now.");
}
log_notice(LD_CONFIG, "Configured to measure usage by country and "
"write aggregate statistics to disk. Check the geoip-stats file "
"in your data directory once I've been running for 24 hours.");
#else
log_warn(LD_CONFIG, "DirReqStatistics enabled, but Tor was built "
"without support for directory request statistics.");
#endif
#ifdef ENABLE_EXIT_STATS
if (options->ExitPortStatistics)
log_notice(LD_CONFIG, "Configured to measure exit port statistics. "
@ -1417,6 +1426,11 @@ options_act(or_options_t *old_options)
log_warn(LD_CONFIG, "Bridges cannot be configured to measure "
"additional GeoIP statistics as entry guards.");
return -1;
} else if (!geoip_is_loaded()) {
/* Check if GeoIP database could be loaded. */
log_warn(LD_CONFIG, "Configured to measure entry node statistics, "
"but no GeoIP database found!");
return -1;
} else
log_notice(LD_CONFIG, "Configured to measure entry node "
"statistics. Look for the entry-stats file that will "

7
src/or/connection.c
View File

@ -2302,6 +2302,13 @@ connection_handle_write(connection_t *conn, int force)
/* else open, or closing */
result = flush_buf_tls(or_conn->tls, conn->outbuf,
max_to_write, &conn->outbuf_flushlen);
#ifdef ENABLE_DIRREQ_STATS
/* If we just flushed the last bytes, check if this tunneled dir
* request is done. */
if (buf_datalen(conn->outbuf) == 0 && conn->dirreq_id)
geoip_change_dirreq_state(conn->dirreq_id, DIRREQ_TUNNELED,
DIRREQ_OR_CONN_BUFFER_FLUSHED);
#endif
switch (result) {
CASE_TOR_TLS_ERROR_ANY:
case TOR_TLS_CLOSE:

10
src/or/connection_edge.c
View File

@ -2551,6 +2551,11 @@ connection_exit_begin_conn(cell_t *cell, circuit_t *circ)
log_debug(LD_EXIT,"Creating new exit connection.");
n_stream = edge_connection_new(CONN_TYPE_EXIT, AF_INET);
#ifdef ENABLE_DIRREQ_STATS
/* Remember the tunneled request ID in the new edge connection, so that
* we can measure download times. */
TO_CONN(n_stream)->dirreq_id = circ->dirreq_id;
#endif
n_stream->_base.purpose = EXIT_PURPOSE_CONNECT;
n_stream->stream_id = rh.stream_id;
@ -2787,6 +2792,11 @@ connection_exit_connect_dir(edge_connection_t *exitconn)
dirconn->_base.purpose = DIR_PURPOSE_SERVER;
dirconn->_base.state = DIR_CONN_STATE_SERVER_COMMAND_WAIT;
#ifdef ENABLE_DIRREQ_STATS
/* Note that the new dir conn belongs to the same tunneled request as
* the edge conn, so that we can measure download times. */
TO_CONN(dirconn)->dirreq_id = TO_CONN(exitconn)->dirreq_id;
#endif
connection_link_connections(TO_CONN(dirconn), TO_CONN(exitconn));
if (connection_add(TO_CONN(exitconn))<0) {

25
src/or/directory.c
View File

@ -2562,12 +2562,21 @@ directory_handle_command_get(dir_connection_t *conn, const char *headers,
goto done;
}
#ifdef ENABLE_GEOIP_STATS
#ifdef ENABLE_DIRREQ_STATS
{
struct in_addr in;
if (tor_inet_aton((TO_CONN(conn))->address, &in))
if (tor_inet_aton((TO_CONN(conn))->address, &in)) {
geoip_note_client_seen(act, ntohl(in.s_addr), time(NULL));
geoip_note_ns_response(act, GEOIP_SUCCESS);
/* Note that a request for a network status has started, so that we
* can measure the download time later on. */
if (TO_CONN(conn)->dirreq_id)
geoip_start_dirreq(TO_CONN(conn)->dirreq_id, dlen, act,
DIRREQ_TUNNELED);
else
geoip_start_dirreq(TO_CONN(conn)->global_identifier, dlen, act,
DIRREQ_DIRECT);
}
}
#endif
@ -3201,6 +3210,18 @@ connection_dir_finished_flushing(dir_connection_t *conn)
tor_assert(conn);
tor_assert(conn->_base.type == CONN_TYPE_DIR);
#ifdef ENABLE_DIRREQ_STATS
/* Note that we have finished writing the directory response. For direct
* connections this means we're done, for tunneled connections its only
* an intermediate step. */
if (TO_CONN(conn)->dirreq_id)
geoip_change_dirreq_state(TO_CONN(conn)->dirreq_id, DIRREQ_TUNNELED,
DIRREQ_FLUSHING_DIR_CONN_FINISHED);
else
geoip_change_dirreq_state(TO_CONN(conn)->global_identifier,
DIRREQ_DIRECT,
DIRREQ_FLUSHING_DIR_CONN_FINISHED);
#endif
switch (conn->_base.state) {
case DIR_CONN_STATE_CLIENT_SENDING:
log_debug(LD_DIR,"client finished sending command.");

297
src/or/geoip.c
View File

@ -347,7 +347,7 @@ geoip_determine_shares(time_t now)
last_time_determined_shares = now;
}
#ifdef ENABLE_GEOIP_STATS
#ifdef ENABLE_DIRREQ_STATS
/** Calculate which fraction of v2 and v3 directory requests aimed at caches
* have been sent to us since the last call of this function up to time
* <b>now</b>. Set *<b>v2_share_out</b> and *<b>v3_share_out</b> to the
@ -390,10 +390,11 @@ geoip_note_client_seen(geoip_client_action_t action,
if (client_history_starts > now)
return;
} else {
#ifndef ENABLE_GEOIP_STATS
#ifndef ENABLE_DIRREQ_STATS
return;
#else
if (options->BridgeRelay || options->BridgeAuthoritativeDir)
if (options->BridgeRelay || options->BridgeAuthoritativeDir ||
!options->DirReqStatistics)
return;
#endif
}
@ -494,7 +495,7 @@ geoip_remove_old_clients(time_t cutoff)
client_history_starts = cutoff;
}
#ifdef ENABLE_GEOIP_STATS
#ifdef ENABLE_DIRREQ_STATS
/** How many responses are we giving to clients requesting v2 network
* statuses? */
static uint32_t ns_v2_responses[GEOIP_NS_RESPONSE_NUM];
@ -511,8 +512,10 @@ void
geoip_note_ns_response(geoip_client_action_t action,
geoip_ns_response_t response)
{
#ifdef ENABLE_GEOIP_STATS
#ifdef ENABLE_DIRREQ_STATS
static int arrays_initialized = 0;
if (!get_options()->DirReqStatistics)
return;
if (!arrays_initialized) {
memset(ns_v2_responses, 0, sizeof(ns_v2_responses));
memset(ns_v3_responses, 0, sizeof(ns_v3_responses));
@ -570,6 +573,235 @@ _c_hist_compare(const void **_a, const void **_b)
return strcmp(a->country, b->country);
}
/** When there are incomplete directory requests at the end of a 24-hour
* period, consider those requests running for longer than this timeout as
* failed, the others as still running. */
#define DIRREQ_TIMEOUT (10*60)
/** Entry in a map from either conn->global_identifier for direct requests
* or a unique circuit identifier for tunneled requests to request time,
* response size, and completion time of a network status request. Used to
* measure download times of requests to derive average client
* bandwidths. */
typedef struct dirreq_map_entry_t {
HT_ENTRY(dirreq_map_entry_t) node;
/** Unique identifier for this network status request; this is either the
* conn->global_identifier of the dir conn (direct request) or a new
* locally unique identifier of a circuit (tunneled request). This ID is
* only unique among other direct or tunneled requests, respectively. */
uint64_t dirreq_id;
unsigned int state:3; /**< State of this directory request. */
unsigned int type:1; /**< Is this a direct or a tunneled request? */
unsigned int completed:1; /**< Is this request complete? */
unsigned int action:2; /**< Is this a v2 or v3 request? */
/** When did we receive the request and started sending the response? */
struct timeval request_time;
size_t response_size; /**< What is the size of the response in bytes? */
struct timeval completion_time; /**< When did the request succeed? */
} dirreq_map_entry_t;
/** Map of all directory requests asking for v2 or v3 network statuses in
* the current geoip-stats interval. Values are
* of type *<b>dirreq_map_entry_t</b>. */
static HT_HEAD(dirreqmap, dirreq_map_entry_t) dirreq_map =
HT_INITIALIZER();
static int
dirreq_map_ent_eq(const dirreq_map_entry_t *a,
const dirreq_map_entry_t *b)
{
return a->dirreq_id == b->dirreq_id && a->type == b->type;
}
static unsigned
dirreq_map_ent_hash(const dirreq_map_entry_t *entry)
{
unsigned u = (unsigned) entry->dirreq_id;
u += entry->type << 20;
return u;
}
HT_PROTOTYPE(dirreqmap, dirreq_map_entry_t, node, dirreq_map_ent_hash,
dirreq_map_ent_eq);
HT_GENERATE(dirreqmap, dirreq_map_entry_t, node, dirreq_map_ent_hash,
dirreq_map_ent_eq, 0.6, malloc, realloc, free);
/** Helper: Put <b>entry</b> into map of directory requests using
* <b>tunneled</b> and <b>dirreq_id</b> as key parts. If there is
* already an entry for that key, print out a BUG warning and return. */
static void
_dirreq_map_put(dirreq_map_entry_t *entry, dirreq_type_t type,
uint64_t dirreq_id)
{
dirreq_map_entry_t *old_ent;
tor_assert(entry->type == type);
tor_assert(entry->dirreq_id == dirreq_id);
/* XXXX022 once we're sure the bug case never happens, we can switch
* to HT_INSERT */
old_ent = HT_REPLACE(dirreqmap, &dirreq_map, entry);
if (old_ent && old_ent != entry) {
log_warn(LD_BUG, "Error when putting directory request into local "
"map. There was already an entry for the same identifier.");
return;
}
}
/** Helper: Look up and return an entry in the map of directory requests
* using <b>tunneled</b> and <b>dirreq_id</b> as key parts. If there
* is no such entry, return NULL. */
static dirreq_map_entry_t *
_dirreq_map_get(dirreq_type_t type, uint64_t dirreq_id)
{
dirreq_map_entry_t lookup;
lookup.type = type;
lookup.dirreq_id = dirreq_id;
return HT_FIND(dirreqmap, &dirreq_map, &lookup);
}
/** Note that an either direct or tunneled (see <b>type</b>) directory
* request for a network status with unique ID <b>dirreq_id</b> of size
* <b>response_size</b> and action <b>action</b> (either v2 or v3) has
* started. */
void
geoip_start_dirreq(uint64_t dirreq_id, size_t response_size,
geoip_client_action_t action, dirreq_type_t type)
{
dirreq_map_entry_t *ent;
if (!get_options()->DirReqStatistics)
return;
ent = tor_malloc_zero(sizeof(dirreq_map_entry_t));
ent->dirreq_id = dirreq_id;
tor_gettimeofday(&ent->request_time);
ent->response_size = response_size;
ent->action = action;
ent->type = type;
_dirreq_map_put(ent, type, dirreq_id);
}
/** Change the state of the either direct or tunneled (see <b>type</b>)
* directory request with <b>dirreq_id</b> to <b>new_state</b> and
* possibly mark it as completed. If no entry can be found for the given
* key parts (e.g., if this is a directory request that we are not
* measuring, or one that was started in the previous measurement period),
* or if the state cannot be advanced to <b>new_state</b>, do nothing. */
void
geoip_change_dirreq_state(uint64_t dirreq_id, dirreq_type_t type,
dirreq_state_t new_state)
{
dirreq_map_entry_t *ent;
if (!get_options()->DirReqStatistics)
return;
ent = _dirreq_map_get(type, dirreq_id);
if (!ent)
return;
if (new_state == DIRREQ_IS_FOR_NETWORK_STATUS)
return;
if (new_state - 1 != ent->state)
return;
ent->state = new_state;
if ((type == DIRREQ_DIRECT &&
new_state == DIRREQ_FLUSHING_DIR_CONN_FINISHED) ||
(type == DIRREQ_TUNNELED &&
new_state == DIRREQ_OR_CONN_BUFFER_FLUSHED)) {
tor_gettimeofday(&ent->completion_time);
ent->completed = 1;
}
}
#ifdef ENABLE_DIRREQ_STATS
/** Return a newly allocated comma-separated string containing statistics
* on network status downloads. The string contains the number of completed
* requests, timeouts, and still running requests as well as the download
* times by deciles and quartiles. Return NULL if we have not observed
* requests for long enough. */
static char *
geoip_get_dirreq_history(geoip_client_action_t action,
dirreq_type_t type)
{
char *result = NULL;
smartlist_t *dirreq_times = NULL;
uint32_t complete = 0, timeouts = 0, running = 0;
int i = 0, bufsize = 1024, written;
dirreq_map_entry_t **ptr, **next, *ent;
struct timeval now;
tor_gettimeofday(&now);
if (action != GEOIP_CLIENT_NETWORKSTATUS &&
action != GEOIP_CLIENT_NETWORKSTATUS_V2)
return NULL;
dirreq_times = smartlist_create();
for (ptr = HT_START(dirreqmap, &dirreq_map); ptr; ptr = next) {
ent = *ptr;
if (ent->action != action || ent->type != type) {
next = HT_NEXT(dirreqmap, &dirreq_map, ptr);
continue;
} else {
if (ent->completed) {
uint32_t *bytes_per_second = tor_malloc_zero(sizeof(uint32_t));
uint32_t time_diff = (uint32_t) tv_udiff(&ent->request_time,
&ent->completion_time);
if (time_diff == 0)
time_diff = 1; /* Avoid DIV/0; "instant" answers are impossible
* anyway by law of nature or something.. */
*bytes_per_second = 1000000 * ent->response_size / time_diff;
smartlist_add(dirreq_times, bytes_per_second);
complete++;
} else {
if (tv_udiff(&ent->request_time, &now) / 1000000 > DIRREQ_TIMEOUT)
timeouts++;
else
running++;
}
next = HT_NEXT_RMV(dirreqmap, &dirreq_map, ptr);
tor_free(ent);
}
}
#define DIR_REQ_GRANULARITY 4
complete = round_uint32_to_next_multiple_of(complete,
DIR_REQ_GRANULARITY);
timeouts = round_uint32_to_next_multiple_of(timeouts,
DIR_REQ_GRANULARITY);
running = round_uint32_to_next_multiple_of(running,
DIR_REQ_GRANULARITY);
result = tor_malloc_zero(bufsize);
written = tor_snprintf(result, bufsize, "complete=%u,timeout=%u,"
"running=%u", complete, timeouts, running);
if (written < 0)
return NULL;
#define MIN_DIR_REQ_RESPONSES 16
if (complete >= MIN_DIR_REQ_RESPONSES) {
uint32_t *dltimes = tor_malloc(sizeof(uint32_t) * complete);
SMARTLIST_FOREACH(dirreq_times, uint32_t *, dlt, {
dltimes[i++] = *dlt;
tor_free(dlt);
});
median_uint32(dltimes, complete); /* sort */
written = tor_snprintf(result + written, bufsize - written,
",min=%u,d1=%u,d2=%u,q1=%u,d3=%u,d4=%u,md=%u,"
"d6=%u,d7=%u,q3=%u,d8=%u,d9=%u,max=%u",
dltimes[0],
dltimes[1*complete/10-1],
dltimes[2*complete/10-1],
dltimes[1*complete/4-1],
dltimes[3*complete/10-1],
dltimes[4*complete/10-1],
dltimes[5*complete/10-1],
dltimes[6*complete/10-1],
dltimes[7*complete/10-1],
dltimes[3*complete/4-1],
dltimes[8*complete/10-1],
dltimes[9*complete/10-1],
dltimes[complete-1]);
tor_free(dltimes);
}
if (written < 0)
result = NULL;
smartlist_free(dirreq_times);
return result;
}
#endif
/** How long do we have to have observed per-country request history before we
* are willing to talk about it? */
#define GEOIP_MIN_OBSERVATION_TIME (12*60*60)
@ -584,7 +816,7 @@ geoip_get_client_history(time_t now, geoip_client_action_t action)
{
char *result = NULL;
int min_observation_time = GEOIP_MIN_OBSERVATION_TIME;
#ifdef ENABLE_GEOIP_STATS
#ifdef ENABLE_DIRREQ_STATS
min_observation_time = DIR_RECORD_USAGE_MIN_OBSERVATION_TIME;
#endif
if (!geoip_is_loaded())
@ -599,7 +831,7 @@ geoip_get_client_history(time_t now, geoip_client_action_t action)
unsigned *counts = tor_malloc_zero(sizeof(unsigned)*n_countries);
unsigned total = 0;
unsigned granularity = IP_GRANULARITY;
#ifdef ENABLE_GEOIP_STATS
#ifdef ENABLE_DIRREQ_STATS
granularity = DIR_RECORD_USAGE_GRANULARITY;
#endif
HT_FOREACH(ent, clientmap, &client_history) {
@ -667,7 +899,7 @@ geoip_get_request_history(time_t now, geoip_client_action_t action)
char *result;
unsigned granularity = IP_GRANULARITY;
int min_observation_time = GEOIP_MIN_OBSERVATION_TIME;
#ifdef ENABLE_GEOIP_STATS
#ifdef ENABLE_DIRREQ_STATS
granularity = DIR_RECORD_USAGE_GRANULARITY;
min_observation_time = DIR_RECORD_USAGE_MIN_OBSERVATION_TIME;
#endif
@ -712,14 +944,14 @@ geoip_get_request_history(time_t now, geoip_client_action_t action)
return result;
}
/** Store all our geoip statistics into $DATADIR/geoip-stats. */
/** Store all our geoip statistics into $DATADIR/dirreq-stats. */
static void
dump_geoip_stats(void)
{
#ifdef ENABLE_GEOIP_STATS
#ifdef ENABLE_DIRREQ_STATS
time_t now = time(NULL);
time_t request_start;
char *filename = get_datadir_fname("geoip-stats");
char *filename = get_datadir_fname("dirreq-stats");
char *data_v2 = NULL, *data_v3 = NULL;
char since[ISO_TIME_LEN+1], written[ISO_TIME_LEN+1];
open_file_t *open_file = NULL;
@ -727,6 +959,9 @@ dump_geoip_stats(void)
FILE *out;
int i;
if (!get_options()->DirReqStatistics)
goto done;
data_v2 = geoip_get_client_history(now, GEOIP_CLIENT_NETWORKSTATUS_V2);
data_v3 = geoip_get_client_history(now, GEOIP_CLIENT_NETWORKSTATUS);
format_iso_time(since, geoip_get_history_start());
@ -785,6 +1020,23 @@ dump_geoip_stats(void)
goto done;
}
data_v2 = geoip_get_dirreq_history(GEOIP_CLIENT_NETWORKSTATUS_V2,
DIRREQ_DIRECT);
data_v3 = geoip_get_dirreq_history(GEOIP_CLIENT_NETWORKSTATUS,
DIRREQ_DIRECT);
if (fprintf(out, "ns-direct-dl %s\nns-v2-direct-dl %s\n",
data_v3 ? data_v3 : "", data_v2 ? data_v2 : "") < 0)
goto done;
tor_free(data_v2);
tor_free(data_v3);
data_v2 = geoip_get_dirreq_history(GEOIP_CLIENT_NETWORKSTATUS_V2,
DIRREQ_TUNNELED);
data_v3 = geoip_get_dirreq_history(GEOIP_CLIENT_NETWORKSTATUS,
DIRREQ_TUNNELED);
if (fprintf(out, "ns-tunneled-dl %s\nns-v2-tunneled-dl %s\n",
data_v3 ? data_v3 : "", data_v2 ? data_v2 : "") < 0)
goto done;
finish_writing_to_file(open_file);
open_file = NULL;
done:
@ -873,13 +1125,24 @@ clear_geoip_db(void)
void
geoip_free_all(void)
{
clientmap_entry_t **ent, **next, *this;
for (ent = HT_START(clientmap, &client_history); ent != NULL; ent = next) {
this = *ent;
next = HT_NEXT_RMV(clientmap, &client_history, ent);
tor_free(this);
{
clientmap_entry_t **ent, **next, *this;
for (ent = HT_START(clientmap, &client_history); ent != NULL; ent = next) {
this = *ent;
next = HT_NEXT_RMV(clientmap, &client_history, ent);
tor_free(this);
}
HT_CLEAR(clientmap, &client_history);
}
{
dirreq_map_entry_t **ent, **next, *this;
for (ent = HT_START(dirreqmap, &dirreq_map); ent != NULL; ent = next) {
this = *ent;
next = HT_NEXT_RMV(dirreqmap, &dirreq_map, ent);
tor_free(this);
}
HT_CLEAR(dirreqmap, &dirreq_map);
}
HT_CLEAR(clientmap, &client_history);
clear_geoip_db();
}

52
src/or/or.h
View File

@ -20,8 +20,8 @@
#ifndef INSTRUMENT_DOWNLOADS
#define INSTRUMENT_DOWNLOADS 1
#endif
#ifndef ENABLE_GEOIP_STATS
#define ENABLE_GEOIP_STATS 1
#ifndef ENABLE_DIRREQ_STATS
#define ENABLE_DIRREQ_STATS 1
#endif
#ifndef ENABLE_BUFFER_STATS
#define ENABLE_BUFFER_STATS 1
@ -970,6 +970,10 @@ typedef struct connection_t {
* to the evdns_server_port is uses to listen to and answer connections. */
struct evdns_server_port *dns_server_port;
#ifdef ENABLE_DIRREQ_STATS
/** Unique ID for measuring tunneled network status requests. */
uint64_t dirreq_id;
#endif
} connection_t;
/** Stores flags and information related to the portion of a v2 Tor OR
@ -1956,6 +1960,10 @@ typedef struct circuit_t {
* linked to an OR connection. */
struct circuit_t *prev_active_on_n_conn;
struct circuit_t *next; /**< Next circuit in linked list of all circuits. */
#ifdef ENABLE_DIRREQ_STATS
/** Unique ID for measuring tunneled network status requests. */
uint64_t dirreq_id;
#endif
} circuit_t;
/** Largest number of relay_early cells that we can send on a given
@ -2492,6 +2500,10 @@ typedef struct {
* exit allows it, we use it. */
int AllowSingleHopCircuits;
/** If true, the user wants us to collect statistics on clients
* requesting network statuses from us as directory. */
int DirReqStatistics;
/** If true, the user wants us to collect statistics on port usage. */
int ExitPortStatistics;
@ -2556,7 +2568,7 @@ typedef struct {
int BridgeRecordUsageByCountry;
#if 0
/** If true, and Tor is built with GEOIP_STATS support, and we're a
/** If true, and Tor is built with DIRREQ_STATS support, and we're a
* directory, record how many directory requests we get from each country. */
int DirRecordUsageByCountry;
/** Round all GeoIP results to the next multiple of this value, to avoid
@ -3672,6 +3684,40 @@ int getinfo_helper_geoip(control_connection_t *control_conn,
const char *question, char **answer);
void geoip_free_all(void);
/** Directory requests that we are measuring can be either direct or
* tunneled. */
typedef enum {
DIRREQ_DIRECT = 0,
DIRREQ_TUNNELED = 1,
} dirreq_type_t;
/** Possible states for either direct or tunneled directory requests that
* are relevant for determining network status download times. */
typedef enum {
/** Found that the client requests a network status; applies to both
* direct and tunneled requests; initial state of a request that we are
* measuring. */
DIRREQ_IS_FOR_NETWORK_STATUS = 0,
/** Finished writing a network status to the directory connection;
* applies to both direct and tunneled requests; completes a direct
* request. */
DIRREQ_FLUSHING_DIR_CONN_FINISHED = 1,
/** END cell sent to circuit that initiated a tunneled request. */
DIRREQ_END_CELL_SENT = 2,
/** Flushed last cell from queue of the circuit that initiated a
* tunneled request to the outbuf of the OR connection. */
DIRREQ_CIRC_QUEUE_FLUSHED = 3,
/** Flushed last byte from buffer of the OR connection belonging to the
* circuit that initiated a tunneled request; completes a tunneled
* request. */
DIRREQ_OR_CONN_BUFFER_FLUSHED = 4
} dirreq_state_t;
void geoip_start_dirreq(uint64_t dirreq_id, size_t response_size,
geoip_client_action_t action, dirreq_type_t type);
void geoip_change_dirreq_state(uint64_t dirreq_id, dirreq_type_t type,
dirreq_state_t new_state);
/********************************* hibernate.c **********************/
int accounting_parse_options(or_options_t *options, int validate_only);

29
src/or/relay.c
View File

@ -532,6 +532,14 @@ relay_send_command_from_edge(uint16_t stream_id, circuit_t *circ,
log_debug(LD_OR,"delivering %d cell %s.", relay_command,
cell_direction == CELL_DIRECTION_OUT ? "forward" : "backward");
#ifdef ENABLE_DIRREQ_STATS
/* If we are sending an END cell and this circuit is used for a tunneled
* directory request, advance its state. */
if (relay_command == RELAY_COMMAND_END && circ->dirreq_id)
geoip_change_dirreq_state(circ->dirreq_id, DIRREQ_TUNNELED,
DIRREQ_END_CELL_SENT);
#endif
if (cell_direction == CELL_DIRECTION_OUT && circ->n_conn) {
/* if we're using relaybandwidthrate, this conn wants priority */
circ->n_conn->client_used = approx_time();
@ -1032,6 +1040,18 @@ connection_edge_process_relay_cell(cell_t *cell, circuit_t *circ,
"Begin cell for known stream. Dropping.");
return 0;
}
#ifdef ENABLE_DIRREQ_STATS
if (rh.command == RELAY_COMMAND_BEGIN_DIR) {
/* Assign this circuit and its app-ward OR connection a unique ID,
* so that we can measure download times. The local edge and dir
* connection will be assigned the same ID when they are created
* and linked. */
static uint64_t next_id = 0;
circ->dirreq_id = ++next_id;
TO_CONN(TO_OR_CIRCUIT(circ)->p_conn)->dirreq_id = circ->dirreq_id;
}
#endif
return connection_exit_begin_conn(cell, circ);
case RELAY_COMMAND_DATA:
++stats_n_data_cells_received;
@ -1821,6 +1841,15 @@ connection_or_flush_from_first_active_circuit(or_connection_t *conn, int max,
orcirc->processed_cells++;
}
#endif
#ifdef ENABLE_DIRREQ_STATS
/* If we just flushed our queue and this circuit is used for a
* tunneled directory request, possibly advance its state. */
if (queue->n == 0 && TO_CONN(conn)->dirreq_id)
geoip_change_dirreq_state(TO_CONN(conn)->dirreq_id,
DIRREQ_TUNNELED,
DIRREQ_CIRC_QUEUE_FLUSHED);
#endif
connection_write_to_buf(cell->body, CELL_NETWORK_SIZE, TO_CONN(conn));
packed_cell_free(cell);

2
src/or/router.c
View File

@ -1916,7 +1916,7 @@ extrainfo_get_client_geoip_summary(time_t now)
{
static time_t last_purged_at = 0;
int geoip_purge_interval = 48*60*60;
#ifdef ENABLE_GEOIP_STATS
#ifdef ENABLE_DIRREQ_STATS
geoip_purge_interval = DIR_RECORD_USAGE_RETAIN_IPS;
#endif
#ifdef ENABLE_ENTRY_STATS